Global patent index - EP 1070957 A2

EP 1070957 A2 2001-01-24 - Differential refractive index detector and liquid chromatograph equipped with the same

Title (en)

Differential refractive index detector and liquid chromatograph equipped with the same

Title (de)

Differential-Refraktometer und damit ausgerüsteter Flüssigkeits-Chromatograph

Title (fr)

Réfractomètre différentiel et chromatographe en phase liquide ainsi équipé

Publication

EP 1070957 A2 (EN)

Application

EP 00104840 A

Priority

JP 20997899 A

Abstract (en)

To provide a differential refractive index detector free from fears for occurrence of personal errors in the judgement of stable condition and capable of performing highly efficient analysis operation, and a liquid chromatograph equipped with the detector. A differential refractive index detector provided with a reference cell (11), a sample cell (12), a light source (21) for irradiating light on these two cells(11,12), a detecting part(23) for detecting light transmitted through respective cells(11,12), and a signal processing part for applying predetermined processing to the output signal from the detecting part, which comprises means for sequentially performing an initial solution purge operation of purging the sample cell(12) and the reference cell(11) with an eluent by passing the eluent through the cells(11,12) at the start of operation of said detector, a stabilizing solution purge operation of allowing the eluent purge of sample cell(12) and reference cell(11) to proceed and at the same time, confirming the stable condition thereof, and a stability confirming operation of confirming whether or not the detector has stabilized in an analysis capable condition by passing the eluent only through the sample cell, and means for announcing that the detector has stabilized in the analysis capable condition. According to the differential refractive index detector of the present invention, the processing from the initial solution purge operation to the stability confirming operation can be automated and a highly efficient analysis operation can be attained. <IMAGE>

IPC 1-7 (main, further and additional classification)

G01N 21/41; G01N 30/74

IPC 8 full level (invention and additional information)

G01N 21/15 (2006.01); G01N 21/41 (2006.01); G01N 30/02 (2006.01); G01N 30/74 (2006.01)

CPC (invention and additional information)

G01N 30/74 (2013.01); G01N 21/4133 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1070957 A2 20010124; EP 1070957 A3 20020403; EP 1070957 B1 20051123; AT 310947 T 20051215; DE 60024176 D1 20051229; DE 60024176 T2 20060803; JP 2001033386 A 20010209; JP 3574010 B2 20041006

INPADOC legal status

2016-05-31 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Ref Legal Event Code: PGFP

- Payment date: 20160208

- Year of fee payment: 17

2016-05-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Ref Legal Event Code: PGFP

- Payment date: 20160302

- Year of fee payment: 17

2016-04-29 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Ref Legal Event Code: PGFP

- Payment date: 20160302

- Year of fee payment: 17

2016-02-08 [REG FR PLFP] FEE PAYMENT

- Ref Country Code: FR

- Ref Legal Event Code: PLFP

- Year of fee payment: 17

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ERC INC., JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: SHOKO SCIENTIFIC CO., LTD., JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: SHOKO SCIENTIFIC CO., LTD., JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120315

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ERC INC., JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120315

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: SHOKO SCIENTIFIC CO., LTD., YOKOHAMA, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120315

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ERC INC., KAWAGUCHI, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ERC INC., KAWAGUCHI, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120315

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: SHOKO SCIENTIFIC CO., LTD., YOKOHAMA, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: SHOKO SCIENTIFIC CO., LTD., YOKOHAMA, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: ERC INC., KAWAGUCHI, JP

- Ref Legal Event Code: R081

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Effective date: 20120306

2012-04-26 [REG DE R082] CHANGE OF REPRESENTATIVE

- Ref Legal Event Code: R082

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Representative's name: PATENTANWAELTE STREHL, SCHUEBEL-HOPF & PARTNER, DE

- Effective date: 20120306

2012-04-26 [REG DE R082] CHANGE OF REPRESENTATIVE

- Ref Legal Event Code: R082

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Representative's name: PATENTANWAELTE STREHL, SCHUEBEL-HOPF & PARTNER, DE

- Effective date: 20120315

2012-03-06 [REG DE R082] CHANGE OF REPRESENTATIVE

- Ref Legal Event Code: R082

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Representative's name: STREHL, SCHUEBEL-HOPF & PARTNER, DE

2012-01-06 [REG FR TQ] PARTIAL TRANSMISSION OF PROPERTY

- Owner name: ERC INC., JP

- Ref Legal Event Code: TQ

- Effective date: 20111208

2012-01-06 [REG FR TQ] PARTIAL TRANSMISSION OF PROPERTY

- Owner name: SHOKO SCIENTIFIC CO., LTD, JP

- Ref Legal Event Code: TQ

- Effective date: 20111208

2011-12-28 [REG GB 732E] AMENDMENTS TO THE REGISTER IN RESPECT OF CHANGES OF NAME OR CHANGES AFFECTING RIGHTS (SECT. 32/1977)

- Ref Legal Event Code: 732E

- Free Format Text: REGISTERED BETWEEN 20111201 AND 20111207

2008-11-28 [PG25 CY] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CY

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2006-12-13 [REG IE MM4A] PATENT LAPSED

- Ref Legal Event Code: MM4A

2006-11-02 [26N] NO OPPOSITION FILED

- Ref Legal Event Code: 26N

- Effective date: 20060824

2006-07-07 [ET] FR: TRANSLATION FILED

- Ref Legal Event Code: ET

2006-05-31 [REG CH PL] PATENT CEASED

- Ref Legal Event Code: PL

2006-05-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

- Ref Legal Event Code: NLV1

2006-04-24 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: PT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20060424

2006-03-31 [PG25 LU] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LU

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060331

2006-03-31 [PG25 MC] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: MC

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060331

2006-03-07 [PG25 IE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20060307

2006-03-06 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20060306

2006-02-23 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20060223

2006-02-23 [PG25 GR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GR

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20060223

2006-02-23 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20060223

2005-12-29 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

- Ref Legal Event Code: FG4D

2005-12-29 [REF] CORRESPONDS TO:

- Ref Legal Event Code: REF

- Ref Document Number: 60024176

- Country of Ref Document: DE

- Date of Ref Document: 2005-12-29

- Kind Code of Ref Document: P

2005-11-30 [REG CH EP] ENTRY IN THE NATIONAL PHASE

- Ref Legal Event Code: EP

2005-11-23 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2005-11-23 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Ref Legal Event Code: FG4D

2005-11-23 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: BE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2005-11-23 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20051123

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030128

2003-01-02 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-11-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20020920

2002-04-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-04-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-01-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI